diff options
Diffstat (limited to 'drivers/dma/bcm2835-dma.c')
-rw-r--r-- | drivers/dma/bcm2835-dma.c | 46 |
1 files changed, 11 insertions, 35 deletions
diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c index 918b7b3f766f..0723096fb50a 100644 --- a/drivers/dma/bcm2835-dma.c +++ b/drivers/dma/bcm2835-dma.c @@ -436,9 +436,11 @@ static struct dma_async_tx_descriptor *bcm2835_dma_prep_dma_cyclic( return vchan_tx_prep(&c->vc, &d->vd, flags); } -static int bcm2835_dma_slave_config(struct bcm2835_chan *c, - struct dma_slave_config *cfg) +static int bcm2835_dma_slave_config(struct dma_chan *chan, + struct dma_slave_config *cfg) { + struct bcm2835_chan *c = to_bcm2835_dma_chan(chan); + if ((cfg->direction == DMA_DEV_TO_MEM && cfg->src_addr_width != DMA_SLAVE_BUSWIDTH_4_BYTES) || (cfg->direction == DMA_MEM_TO_DEV && @@ -452,8 +454,9 @@ static int bcm2835_dma_slave_config(struct bcm2835_chan *c, return 0; } -static int bcm2835_dma_terminate_all(struct bcm2835_chan *c) +static int bcm2835_dma_terminate_all(struct dma_chan *chan) { + struct bcm2835_chan *c = to_bcm2835_dma_chan(chan); struct bcm2835_dmadev *d = to_bcm2835_dma_dev(c->vc.chan.device); unsigned long flags; int timeout = 10000; @@ -495,24 +498,6 @@ static int bcm2835_dma_terminate_all(struct bcm2835_chan *c) return 0; } -static int bcm2835_dma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, - unsigned long arg) -{ - struct bcm2835_chan *c = to_bcm2835_dma_chan(chan); - - switch (cmd) { - case DMA_SLAVE_CONFIG: - return bcm2835_dma_slave_config(c, - (struct dma_slave_config *)arg); - - case DMA_TERMINATE_ALL: - return bcm2835_dma_terminate_all(c); - - default: - return -ENXIO; - } -} - static int bcm2835_dma_chan_init(struct bcm2835_dmadev *d, int chan_id, int irq) { struct bcm2835_chan *c; @@ -565,18 +550,6 @@ static struct dma_chan *bcm2835_dma_xlate(struct of_phandle_args *spec, return chan; } -static int bcm2835_dma_device_slave_caps(struct dma_chan *dchan, - struct dma_slave_caps *caps) -{ - caps->src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); - caps->dstn_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); - caps->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); - caps->cmd_pause = false; - caps->cmd_terminate = true; - - return 0; -} - static int bcm2835_dma_probe(struct platform_device *pdev) { struct bcm2835_dmadev *od; @@ -615,9 +588,12 @@ static int bcm2835_dma_probe(struct platform_device *pdev) od->ddev.device_free_chan_resources = bcm2835_dma_free_chan_resources; od->ddev.device_tx_status = bcm2835_dma_tx_status; od->ddev.device_issue_pending = bcm2835_dma_issue_pending; - od->ddev.device_slave_caps = bcm2835_dma_device_slave_caps; od->ddev.device_prep_dma_cyclic = bcm2835_dma_prep_dma_cyclic; - od->ddev.device_control = bcm2835_dma_control; + od->ddev.device_config = bcm2835_dma_slave_config; + od->ddev.device_terminate_all = bcm2835_dma_terminate_all; + od->ddev.src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); + od->ddev.dst_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); + od->ddev.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); od->ddev.dev = &pdev->dev; INIT_LIST_HEAD(&od->ddev.channels); spin_lock_init(&od->lock); |